1
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Sharma N, Zou HB, Lee YM, Fukuzumi S, Nam W. A Mononuclear Non-Heme Manganese(III)-Aqua Complex in Oxygen Atom Transfer Reactions via Electron Transfer. J Am Chem Soc 2021; 143:1521-1528. [PMID: 33439643 DOI: 10.1021/jacs.0c11420] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Metal-oxygen complexes, such as metal-oxo [M(O2-)], -hydroxo [M(OH-)], -peroxo [M(O22-)], -hydroperoxo [M(OOH-)], and -superoxo [M(O2•-)] species, are capable of conducting oxygen atom transfer (OAT) reactions with organic substrates, such as thioanisole (PhSMe) and triphenylphosphine (Ph3P). However, OAT of metal-aqua complexes, [M(OH2)]n+, has yet to be reported. We report herein OAT of a mononuclear non-heme Mn(III)-aqua complex, [(dpaq)MnIII(OH2)]2+ (1, dpaq = 2-[bis(pyridin-2-ylmethyl)]amino-N-quinolin-8-yl-acetamidate), to PhSMe and Ph3P derivatives for the first time; it is noted that no OAT occurs from the corresponding Mn(III)-hydroxo complex, [(dpaq)MnIII(OH)]+ (2), to the substrates. Mechanistic studies reveal that OAT reaction of 1 occurs via electron transfer from 4-methoxythioanisole to 1 to produce the 4-methoxythioanisole radical cation and [(dpaq)MnII(OH2)]+, followed by nucleophilic attack of H2O in [(dpaq)MnII(OH2)]+ to the 4-methoxythioanisole radical cation to produce an OH adduct radical, 2,4-(MeO)2C6H3S•(OH)Me, which disproportionates or undergoes electron transfer to 1 to yield methyl 4-methoxyphenyl sulfoxide. Formation of the thioanisole radical cation derivatives is detected by the stopped-flow transient absorption measurements in OAT from 1 to 2,4-dimethoxythioanisole and 3,4-dimethoxythioanisole, being compared with that in the photoinduced electron transfer oxidation of PhSMe derivatives, which are detected by laser-induced transient absorption measurements. Similarly, OAT from 1 to Ph3P occurs via electron transfer from Ph3P to 1, and the proton effect on the reaction rate has been discussed. The rate constants of electron transfer from electron donors, including PhSMe and Ph3P derivatives, to 1 are fitted well by the electron transfer driving force dependence of the rate constants predicted by the Marcus theory of outer-sphere electron transfer.
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Affiliation(s)
- Namita Sharma
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Huai-Bo Zou
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea.,Department of Chemistry and Bioengineering, Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, Yichun University, Yichun 336000, China
| | - Yong-Min Lee
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea.,Faculty of Science and Engineering, Meijo University, Nagoya, Aichi 468-8502, Japan
| | - Wonwoo Nam
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea.,Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
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2
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Sharma N, Lee Y, Nam W, Fukuzumi S. Generation and Electron‐Transfer Reactivity of the Long‐Lived Photoexcited State of a Manganese(IV)‐Oxo‐Scandium Nitrate Complex. Isr J Chem 2020. [DOI: 10.1002/ijch.201900147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Namita Sharma
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
| | - Yong‐Min Lee
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
- Research Institute for Basic Sciences Ewha Womans University Seoul 03760 Korea
| | - Wonwoo Nam
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics (LICP) Chinese Academy of Sciences Lanzhou 730000 China
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science Ewha Womans University Seoul 03760 Korea
- Faculty of Science and Engineering Meijo University Nagoya, Aichi 468-8502 Japan
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3
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Gini A, Rigotti T, Pérez‐Ruiz R, Uygur M, Mas‐Ballesté R, Corral I, Martínez‐Fernández L, de la Peña O'Shea VA, García Mancheño O, Alemán J. Mesityl or Imide Acridinium Photocatalysts: Accessible Versus Inaccessible Charge‐Transfer States in Photoredox Catalysis. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Andrea Gini
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
| | - Thomas Rigotti
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
| | - Raúl Pérez‐Ruiz
- Photoactivated Process UnitIMDEA Energy Av. Ramón de la Sagra 3 28935 Madrid Spain
| | - Mustafa Uygur
- Organic Chemistry InstituteUniversity of Mϋnster Corrensstraße 40 48149 Münster Germany
| | - Rubén Mas‐Ballesté
- Inorganic Chemistry Department, Módulo 7Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
| | - Inés Corral
- Institute for Advanced Research in Chemical Sciences (IAdChem)Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
- Condensed Matter Physics Center (IFIMAC)Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
- Chemistry Department, Módulo 13Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
| | - Lara Martínez‐Fernández
- Condensed Matter Physics Center (IFIMAC)Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
| | | | - Olga García Mancheño
- Organic Chemistry InstituteUniversity of Mϋnster Corrensstraße 40 48149 Münster Germany
| | - José Alemán
- Organic Chemistry Department, Módulo 1Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem)Universidad Autónoma de Madrid, Facultad de Ciencias Calle Francisco Tomás y Valiente, 7 28049 Madrid Spain
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4
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Eberhard J, Peuntinger K, Fröhlich R, Guldi DM, Mattay J. Synthesis and Properties of Acridine and Acridinium Dye Functionalized Bis(terpyridine) Ruthenium(II) Complexes. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800257] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jens Eberhard
- Organische Chemie I; Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33501 Bielefeld Germany
| | - Katrin Peuntinger
- Physikalische Chemie I; Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials; Friedrich-Alexander-Universität Erlangen-Nürnberg; Egerlandstr. 3 91058 Erlangen Germany
| | - Roland Fröhlich
- Röntgenstrukturanalyse; Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Dirk M. Guldi
- Physikalische Chemie I; Department of Chemistry and Pharmacy and Interdisciplinary Center for Molecular Materials; Friedrich-Alexander-Universität Erlangen-Nürnberg; Egerlandstr. 3 91058 Erlangen Germany
| | - Jochen Mattay
- Organische Chemie I; Fakultät für Chemie; Universität Bielefeld; Universitätsstr. 25 33501 Bielefeld Germany
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5
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Takano Y, Hanai E, Imahori H. Photoinduced electron transfer reaction in mitochondria for spatiotemporal selective photo-oxidation of lipids by donor/acceptor linked molecules. NANOSCALE 2017; 9:17909-17913. [PMID: 29124263 DOI: 10.1039/c7nr04919f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Donor-acceptor-linked molecules have been synthesized and utilized to induce the rapid and site-selective lipid-oxidation in mitochondria by utilizing a photoinduced intermolecular electron transfer reaction. Two water-soluble donor-acceptor molecules (1 and 2) were designed and synthesized for this purpose. 2 was prepared to modulate its affinity to cell membrane in mitochondria. Confocal laser microscopy experiments revealed that 1 and 2 possess high localization abilities in mitochondria. By the photoinduced electron transfer, 2 exhibited the remarkable oxidation ability of lipids, mainly cardiolipin. In HeLa cells, 2 triggered mitochondrial lipid oxidation, which was followed by apoptotic cell death, under illumination within a few seconds. These results show that the present molecular system is highly promising to utilize the photoinduced intermolecular electron transfer reaction in a precise spatiotemporal manner in a cell by using light.
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Affiliation(s)
- Yuta Takano
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
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6
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Tsudaka T, Kotani H, Ohkubo K, Nakagawa T, Tkachenko NV, Lemmetyinen H, Fukuzumi S. Photoinduced Electron Transfer in 9-Substituted 10-Methylacridinium Ions. Chemistry 2016; 23:1306-1317. [DOI: 10.1002/chem.201604527] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Takeshi Tsudaka
- Department of Material and Life Science Graduate School of Engineering; Osaka University and SENTAN, Japan Science and Technology Agency (JST), Suita; Osaka 565-0871 Japan
| | - Hiroaki Kotani
- Department of Chemistry, Graduate School of Pure and Applied Sciences; University of Tsukuba; 1-1-1 Tennoudai, Tsukuba Ibaraki 305-8571 Japan
| | - Kei Ohkubo
- Department of Material and Life Science Graduate School of Engineering; Osaka University and SENTAN, Japan Science and Technology Agency (JST), Suita; Osaka 565-0871 Japan
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 Korea
- Division of Innovative Research for Drug Design, Institute of Academic Initiatives; Osaka University, Suita; Osaka 565-0871 Japan
| | - Tatsuo Nakagawa
- Unisoku Co. Ltd, SENTAN, Japan Science and Technology Agency (JST); Hirakata Osaka 573-0131 Japan
| | - Nikolai V. Tkachenko
- Institute of Materials Chemistry; Tampere University of Technology; P.O. Box 541 33101 Tampere Finland
| | - Helge Lemmetyinen
- Institute of Materials Chemistry; Tampere University of Technology; P.O. Box 541 33101 Tampere Finland
| | - Shunichi Fukuzumi
- Department of Chemistry and Nano Science; Ewha Womans University; Seoul 120-750 Korea
- Faculty of Science and Technology; Meijo University, SENTAN, Japan Science and Technology Agency (JST), Nagoya; Aichi 468-8502 Japan
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7
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Affiliation(s)
- Nathan A. Romero
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - David A. Nicewicz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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8
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Tsudaka T, Ohkubo K, Fukuzumi S. Photocatalytic oxidation of iron(ii) complexes by dioxygen using 9-mesityl-10-methylacridinium ions. Chem Commun (Camb) 2016; 52:6178-80. [DOI: 10.1039/c6cc00359a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photocatalytic oxidation of iron(ii) complexes by dioxygen occurred using the organic photocatalysts, 9-mesityl-10-methylacridinium ion and 2-phenyl-4-(1-naphthyl) quinolinium ion (QuPh+-NA), in the presence of triflic acid in acetonitrile under visible light irradiation.
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Affiliation(s)
- Takeshi Tsudaka
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA and SENTAN
- Japan Science and Technology Agency (JST)
| | - Kei Ohkubo
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA and SENTAN
- Japan Science and Technology Agency (JST)
| | - Shunichi Fukuzumi
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- ALCA and SENTAN
- Japan Science and Technology Agency (JST)
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9
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Romero NA, Nicewicz DA. Mechanistic insight into the photoredox catalysis of anti-markovnikov alkene hydrofunctionalization reactions. J Am Chem Soc 2014; 136:17024-35. [PMID: 25390821 PMCID: PMC4277776 DOI: 10.1021/ja506228u] [Citation(s) in RCA: 234] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
We describe our efforts to understand
the key mechanistic aspects
of the previously reported alkene hydrofunctionalization reactions
using 9-mesityl-10-methylacridinium (Mes-Acr+) as a photoredox catalyst. Importantly, we are able
to detect alkene cation radical intermediates, and confirm that phenylthiyl
radical is capable of oxidizing the persistent acridinyl radical in
a fast process that unites the catalytic activity of the photoredox
and hydrogen atom transfer (HAT) manifolds. Additionally, we present
evidence that diphenyl disulfide ((PhS)2)
operates on a common catalytic cycle with thiophenol (PhSH) by way of photolytic cleaveage of the disulfide bond. Transition
structure analysis of the HAT step using DFT reveals that the activation
barrier for H atom donation from PhSH is significantly
lower than 2-phenylmalononitrile (PMN) due to structural
reorganization. In the early stages of the reaction, Mes-Acr+ is observed to engage in off-cycle adduct
formation, presumably as buildup of PhS− becomes significant. The kinetic differences between PhSH and (PhS)2 as HAT catalysts indicate that
the proton transfer step may have significant rate limiting influence.
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Affiliation(s)
- Nathan A Romero
- Department of Chemistry, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599-3290, United States
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10
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Kawashima Y, Ohkubo K, Okada H, Matsuo Y, Fukuzumi S. Supramolecular Formation of Li+@PCBM Fullerene with Sulfonated Porphyrins and Long-Lived Charge Separation. Chemphyschem 2014; 15:3782-90. [DOI: 10.1002/cphc.201402512] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Indexed: 12/31/2022]
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11
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Fukuzumi S, Ohkubo K. Organic synthetic transformations using organic dyes as photoredox catalysts. Org Biomol Chem 2014; 12:6059-71. [PMID: 24984977 DOI: 10.1039/c4ob00843j] [Citation(s) in RCA: 327] [Impact Index Per Article: 32.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The oxidizing ability of organic dyes is enhanced significantly by photoexcitation. Radical cations of weak electron donors can be produced by electron transfer from the donors to the excited states of organic dyes. The radical cations thus produced undergo bond formation reactions with various nucleophiles. For example, the direct oxygenation of benzene to phenol was made possible under visible-light irradiation of 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) in an oxygen-saturated acetonitrile solution of benzene and water via electron transfer from benzene to the triplet excited state of DDQ. 3-Cyano-1-methylquinolinium ion (QuCN(+)) can also act as an efficient photocatalyst for the selective oxygenation of benzene to phenol using oxygen and water under homogeneous and ambient conditions. Alkoxybenzenes were also obtained when water was replaced by alcohol under otherwise identical experimental conditions. QuCN(+) can also be an effective photocatalyst for the fluorination of benzene with O2 and fluoride anion. Photocatalytic selective oxygenation of aromatic compounds was achieved using an electron donor-acceptor-linked dyad, 9-mesityl-10-methylacridinium ion (Acr(+)-Mes), as a photocatalyst and O2 as the oxidant under visible-light irradiation. The electron-transfer state of Acr(+)-Mes produced upon photoexcitation can oxidize and reduce substrates and dioxygen, respectively, leading to the selective oxygenation and halogenation of substrates. Acr(+)-Mes has been utilized as an efficient organic photoredox catalyst for many other synthetic transformations.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan.
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12
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Basili S, Del Giacco T, Elisei F, Germani R. An acridinium-based sensor as a fluorescent photoinduced electron transfer probe for proton detection modulated by anionic micelles. Org Biomol Chem 2014; 12:6677-83. [DOI: 10.1039/c4ob00559g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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13
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Fukuzumi S, Ohkubo K, Suenobu T. Long-lived charge separation and applications in artificial photosynthesis. Acc Chem Res 2014; 47:1455-64. [PMID: 24793793 DOI: 10.1021/ar400200u] [Citation(s) in RCA: 277] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Researchers have long been interested in replicating the reactivity that occurs in photosynthetic organisms. To mimic the long-lived charge separations characteristic of the reaction center in photosynthesis, researchers have applied the Marcus theory to design synthetic multistep electron-transfer (ET) systems. In this Account, we describe our recent research on the rational design of ET control systems, based on models of the photosynthetic reaction center that rely on the Marcus theory of ET. The key to obtaining a long-lived charge separation is the careful choice of electron donors and acceptors that have small reorganization energies of ET. In these cases, the driving force of back ET is located in the Marcus inverted region, where the lifetime of the charge-separated state lengthens as the driving force of back ET increases. We chose porphyrins as electron donors and fullerenes as electron acceptors, both of which have small ET reorganization energies. By linking electron donor porphyrins and electron acceptor fullerenes at appropriate distances, we achieved charge-separated states with long lifetimes. We could further lengthen the lifetimes of charge-separated states by mixing a variety of components, such as a terminal electron donor, an electron mediator, and an electron acceptor, mimicking both the photosynthetic reaction center and the multistep photoinduced ET that occurs there. However, each step in multistep ET loses a fraction of the initial excitation energy during the long-distance charge separation. To overcome this drawback in multistep ET systems, we used designed new systems where we could finely control the redox potentials and the geometry of simple donor-acceptor dyads. These modifications resulted in a small ET reorganization energy and a high-lying triplet excited state. Our most successful example, 9-mesityl-10-methylacridinium ion (Acr(+)-Mes), can undergo a fast photoinduced ET from the mesityl (Mes) moiety to the singlet excited state of the acridinium ion moiety (Acr(+)) with extremely slow back ET. The high-energy triplet charge-separated state is located deep in the Marcus inverted region, and we have detected the structural changes during the photoinduced ET in this system using X-ray crystallography. To increase the efficiency of both the light-harvesting and photoinduced ET, we assembled the Acr(+)-Mes dyads on gold nanoparticles to bring them in closer proximity to one another. We can also incorporate Acr(+)-Mes molecules within nanosized mesoporous silica-alumina. In contrast to the densely assembled dyads on gold nanoparticles, each Acr(+)-Mes molecule in silica-alumina is isolated in the mesopore, which inhibits the bimolecular back ET and leads to longer lifetimes in solution at room temperature than the natural photosynthetic reaction center. Acr(+)-Mes and related compounds act as excellent organic photocatalysts and facilitate a variety of reactions such as oxygenation, bromination, carbon-carbon bond formation, and hydrogen evolution reactions.
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Affiliation(s)
- Shunichi Fukuzumi
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency, Suita, Osaka 565-0871, Japan
- Department
of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Kei Ohkubo
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency, Suita, Osaka 565-0871, Japan
| | - Tomoyoshi Suenobu
- Department
of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency, Suita, Osaka 565-0871, Japan
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Nicewicz DA, Hamilton DS. Organic Photoredox Catalysis as a General Strategy for Anti-Markovnikov Alkene Hydrofunctionalization. Synlett 2014; 25:1191-1196. [PMID: 29657365 PMCID: PMC5895094 DOI: 10.1055/s-0033-1340738] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The development of a general catalyst system for the direct anti-Markovnikov hydrofunctionalization of alkenes is presented. A unique catalyst system comprised of an acridinium photooxidant and a hydrogen atom transfer reagent allows for a range of alkene anti-Markovnikov hydrofunctionalization reactions including hydroalkoxylation, hydroamination, and hydroacetoxylation.
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Affiliation(s)
- David A. Nicewicz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
| | - David S. Hamilton
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-3290, USA
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15
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Fukuzumi S, Yamada Y. Thermal and Photocatalytic Production of Hydrogen Peroxide and its Use in Hydrogen Peroxide Fuel Cells. Aust J Chem 2014. [DOI: 10.1071/ch13436] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This mini review describes our recent developments on the thermal and photocatalytic production of hydrogen peroxide and its use in hydrogen peroxide fuel cells. Selective two-electron reduction of dioxygen to hydrogen peroxide by one-electron reductants has been made possible by using appropriate metal complexes with an acid. Protonation of the ligands of the complexes facilitates the reduction of O2. The photocatalytic two-electron reduction of dioxygen to hydrogen peroxide also occurs using organic photocatalysts and oxalic acid as an electron source in buffer solutions. The control of the water content and pH of a reaction solution is significant for improving the catalytic activity and durability. A hydrogen peroxide fuel cell can be operated with a one-compartment structure without a membrane, which is certainly more promising for the development of low-cost fuel cells as compared with two compartment hydrogen fuel cells that require membranes. Utilisation of iron complexes as cathode materials are reviewed.
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16
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Bill NL, Ishida M, Kawashima Y, Ohkubo K, Sung YM, Lynch VM, Lim JM, Kim D, Sessler JL, Fukuzumi S. Long-lived charge-separated states produced in supramolecular complexes between anionic and cationic porphyrins. Chem Sci 2014. [DOI: 10.1039/c4sc00803k] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Photoinduced electron transfer in a porphyrin supramolecule occurs to produce an 83 ms CS state.
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Affiliation(s)
- Nathan L. Bill
- Department of Chemistry
- The University of Texas at Austin
- Austin, USA
| | - Masatoshi Ishida
- Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
- Education Centre for Global Leaders in Molecular Systems for Devices
- Kyushu University
| | - Yuki Kawashima
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- Suita, Japan
| | - Kei Ohkubo
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- Suita, Japan
| | - Young Mo Sung
- Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | - Vincent M. Lynch
- Department of Chemistry
- The University of Texas at Austin
- Austin, USA
| | - Jong Min Lim
- Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | - Dongho Kim
- Department of Chemistry
- Yonsei University
- Seoul 120-749, Korea
| | | | - Shunichi Fukuzumi
- Department of Material and Life Science
- Graduate School of Engineering
- Osaka University
- Suita, Japan
- Department of Bioinspired Chemistry (WCU)
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17
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Eberhard J, Peuntinger K, Rath S, Neumann B, Stammler HG, Guldi DM, Mattay J. A study of acridine and acridinium-substituted bis(terpyridine)zinc(ii) and ruthenium(ii) complexes as photosensitizers for O2 (1Δg) generation. Photochem Photobiol Sci 2014; 13:380-96. [DOI: 10.1039/c3pp50349f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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18
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Fukuzumi S, Yamada Y. Shape- and size-controlled nanomaterials for artificial photosynthesis. CHEMSUSCHEM 2013; 6:1834-1847. [PMID: 23940015 DOI: 10.1002/cssc.201300361] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2013] [Revised: 06/08/2013] [Indexed: 06/02/2023]
Abstract
Nanomaterials with various shapes and sizes have been developed to mimic functions of photosynthesis in which solar energy conversion is achieved by using nanosized proteins with controlled shapes and sizes. Artificial photosynthesis consists of light-harvesting and charge-separation processes together with catalytic units of water oxidation and reduction. Nanosized mesoporous silica-alumina was utilized to encapsulate organic charge-separation molecules inside the nanospace to elongate the lifetimes of the charge-separated states, as observed in the photosynthetic reaction centers. Metal nanoparticles with controlled shapes and sizes have also been utilized as efficient catalysts for photocatalytic hydrogen evolution from water with reductants by using electron donor-acceptor organic molecules as photocatalysts. The control of the shape and size of metal nanoparticles plays a very important role in achieving high catalytic performance in catalytic hydrogen evolution in water reduction and also in catalytic oxygen evolution in water oxidation.
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Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Division of Advanced Science and Biotechnology Graduate School of Engineering, ALCA (Japan) Science and Technology Agency (JST), Osaka University, 2-1 Yamada-oka, Suita, Osaka 563-0028 (Japan); Department of Bioinspired Science, Ewha Womans University, Seoul 120-750 (Korea).
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Yamada Y, Nomura A, Miyahigashi T, Ohkubo K, Fukuzumi S. Acetate Induced Enhancement of Photocatalytic Hydrogen Peroxide Production from Oxalic Acid and Dioxygen. J Phys Chem A 2013; 117:3751-60. [DOI: 10.1021/jp312795f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yusuke Yamada
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
| | - Akifumi Nomura
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
| | - Takamitsu Miyahigashi
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
| | - Kei Ohkubo
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
| | - Shunichi Fukuzumi
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
- Department of Bioinspired
Science, Ewha Womans University, Seoul
120-750, Korea
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21
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Lee S, You Y, Ohkubo K, Fukuzumi S, Nam W. Photoelectrocatalysis to Improve Cycloreversion Quantum Yields of Photochromic Dithienylethene Compounds. Angew Chem Int Ed Engl 2012; 51:13154-8. [DOI: 10.1002/anie.201206256] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2012] [Indexed: 11/09/2022]
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22
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Lee S, You Y, Ohkubo K, Fukuzumi S, Nam W. Photoelectrocatalysis to Improve Cycloreversion Quantum Yields of Photochromic Dithienylethene Compounds. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206256] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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23
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Oxygenation and chlorination of aromatic hydrocarbons with hydrochloric acid photosensitized by 9-mesityl-10-methylacridinium under visible light irradiation. RESEARCH ON CHEMICAL INTERMEDIATES 2012. [DOI: 10.1007/s11164-012-0643-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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24
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Yamada Y, Maeda K, Ohkubo K, Karlin KD, Fukuzumi S. Improvement of durability of an organic photocatalyst in p-xylene oxygenation by addition of a Cu(II) complex. Phys Chem Chem Phys 2012; 14:9654-9. [PMID: 22692585 DOI: 10.1039/c2cp41207a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The catalytic durability of an organic photocatalyst, 9-mesityl-10-methyl acridinium ion (Acr(+)-Mes), has been dramatically improved by the addition of [{tris(2-pyridylmethyl)amine}Cu(II)](ClO(4))(2) ([(tmpa)Cu(II)](2+)) in the photocatalytic oxygenation of p-xylene by molecular oxygen in acetonitrile. Such an improvement is not observed by the addition of Cu(ClO(4))(2) in the absence of organic ligands. The addition of [(tmpa)Cu](2+) in the reaction solution resulted in more than an 11 times higher turnover number (TON) compared with the TON obtained without [(tmpa)Cu(II)](2+). In the photocatalytic oxygenation, a stoichiometric amount of H(2)O(2) formation was observed in the absence of [(tmpa)Cu(II)](2+), however, much less H(2)O(2) formation was observed in the presence of [(tmpa)Cu(II)](2+). The photocatalytic mechanism was investigated by laser flash photolysis measurements in order to detect intermediates. The reaction of O(2)˙(-) with [(tmpa)Cu(II)](2+) monitored by UV-vis spectroscopy in propionitrile at 203 K suggested formation of [{(tmpa)Cu(II)}(2)O(2)](2+), a transformation which is crucial for the overall 4-electron reduction of molecular O(2) to water, and a key in the observed improvement in the catalytic durability of Acr(+)-Mes.
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Affiliation(s)
- Yusuke Yamada
- Department of Material and Life Science, Division of Advanced Science and Biotechnology, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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Formation of a long-lived electron-transfer state in mesoporous silica-alumina composites enhances photocatalytic oxygenation reactivity. Proc Natl Acad Sci U S A 2012; 109:15572-7. [PMID: 22543164 DOI: 10.1073/pnas.1119994109] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A simple donor-acceptor linked dyad, 9-mesityl-10-methylacridinium ion (Acr(+)-Mes) was incorporated into nanosized mesoporous silica-alumina to form a composite, which in acetonitrile is highly dispersed. In this medium, upon visible light irradiation, the formation of an extremely long-lived electron-transfer state (Acr(•)-Mes(•+)) was confirmed by EPR and laser flash photolysis spectroscopic methods. The composite of Acr(+)-Mes-incorporated mesoporous silica-alumina with an added copper complex [(tmpa)Cu(II)] (ClO(4)(-))2 (tmpa = tris(2-pyridylmethyl)amine) acts as an efficient and robust photocatalyst for the selective oxygenation of p-xylene by molecular oxygen to produce p-tolualdehyde and hydrogen peroxide. Thus, incorporation of Acr(+)-Mes into nanosized mesoporous silica-alumina combined with an O(2)-reduction catalyst ([(tmpa)Cu(II)](2+)) provides a promising method in the development of efficient and robust organic photocatalysts for substrate oxygenation by dioxygen, the ultimate environmentally benign oxidant.
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Kwon JE, Lee S, You Y, Baek KH, Ohkubo K, Cho J, Fukuzumi S, Shin I, Park SY, Nam W. Fluorescent Zinc Sensor with Minimized Proton-Induced Interferences: Photophysical Mechanism for Fluorescence Turn-On Response and Detection of Endogenous Free Zinc Ions. Inorg Chem 2012; 51:8760-74. [DOI: 10.1021/ic300476e] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ji Eon Kwon
- Department of Materials Science & Engineering, Seoul National University, San 56-1, Sillim 9-dong, Gwanak-gu, Seoul 151-744, Korea
| | - Sumin Lee
- Department of Bioinspired Science, Ewha Womans University, Daehyun-dong, Seodaemun-gu,
Seoul 120-750, Korea
| | - Youngmin You
- Department of Bioinspired Science, Ewha Womans University, Daehyun-dong, Seodaemun-gu,
Seoul 120-750, Korea
| | - Kyung-Hwa Baek
- Department
of Chemistry, Yonsei University, Sinchon-dong,
Seodaemun-gu, Seoul
120-749, Korea
| | - Kei Ohkubo
- Department
of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
| | - Jaeheung Cho
- Department of Bioinspired Science, Ewha Womans University, Daehyun-dong, Seodaemun-gu,
Seoul 120-750, Korea
| | - Shunichi Fukuzumi
- Department of Bioinspired Science, Ewha Womans University, Daehyun-dong, Seodaemun-gu,
Seoul 120-750, Korea
- Department
of Material and Life
Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871,
Japan
| | - Injae Shin
- Department
of Chemistry, Yonsei University, Sinchon-dong,
Seodaemun-gu, Seoul
120-749, Korea
| | - Soo Young Park
- Department of Materials Science & Engineering, Seoul National University, San 56-1, Sillim 9-dong, Gwanak-gu, Seoul 151-744, Korea
| | - Wonwoo Nam
- Department of Bioinspired Science, Ewha Womans University, Daehyun-dong, Seodaemun-gu,
Seoul 120-750, Korea
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27
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Hoshino M, Uekusa H, Tomita A, Koshihara SY, Sato T, Nozawa S, Adachi SI, Ohkubo K, Kotani H, Fukuzumi S. Determination of the Structural Features of a Long-Lived Electron-Transfer State of 9-Mesityl-10-methylacridinium Ion. J Am Chem Soc 2012; 134:4569-72. [DOI: 10.1021/ja300602h] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Manabu Hoshino
- Department
of Chemistry and
Materials Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
- CREST, Japan Science and Technology Agency (JST)
| | - Hidehiro Uekusa
- Department
of Chemistry and
Materials Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
| | - Ayana Tomita
- Department
of Chemistry and
Materials Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
| | - Shin-ya Koshihara
- Department
of Chemistry and
Materials Science, Tokyo Institute of Technology, Meguro-ku, Tokyo 152-8551, Japan
- CREST, Japan Science and Technology Agency (JST)
| | - Tokushi Sato
- Photon Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki
305-0801, Japan
| | - Shunsuke Nozawa
- Photon Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki
305-0801, Japan
| | - Shin-ichi Adachi
- Photon Factory, High Energy Accelerator Research Organization, Tsukuba, Ibaraki
305-0801, Japan
- PRESTO, Japan Science and Technology Agency (JST)
| | - Kei Ohkubo
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka
565-0871, Japan
| | - Hiroaki Kotani
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka
565-0871, Japan
| | - Shunichi Fukuzumi
- Department of Material and Life
Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka
565-0871, Japan
- Department of
Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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28
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Kotani H, Ohkubo K, Fukuzumi S. Formation of a long-lived electron-transfer state of a naphthalene–quinolinium ion dyad and the π-dimer radical cation. Faraday Discuss 2012; 155:89-102; discussion 103-14. [DOI: 10.1039/c1fd00084e] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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29
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Yamada Y, Miyahigashi T, Ohkubo K, Fukuzumi S. Photocatalytic hydrogen evolution from carbon-neutral oxalate with 2-phenyl-4-(1-naphthyl)quinolinium ion and metal nanoparticles. Phys Chem Chem Phys 2012; 14:10564-71. [DOI: 10.1039/c2cp41906h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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31
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Fukuzumi S, Ohkubo K. Assemblies of artificial photosynthetic reaction centres. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15585k] [Citation(s) in RCA: 138] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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32
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Yamada Y, Miyahigashi T, Kotani H, Ohkubo K, Fukuzumi S. Photocatalytic Hydrogen Evolution under Highly Basic Conditions by Using Ru Nanoparticles and 2-Phenyl-4-(1-naphthyl)quinolinium Ion. J Am Chem Soc 2011; 133:16136-45. [DOI: 10.1021/ja206079e] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Yusuke Yamada
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Takamitsu Miyahigashi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Hiroaki Kotani
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Kei Ohkubo
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
| | - Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, and ALCA, Japan Science and Technology Agency (JST), Suita, Osaka 565-0871, Japan
- Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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33
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Habermeyer B, Takai A, Gros CP, El Ojaimi M, Barbe J, Fukuzumi S. Dynamics of Closure of Zinc Bis‐Porphyrin Molecular Tweezers with Copper(II) Ions and Electron Transfer. Chemistry 2011; 17:10670-81. [DOI: 10.1002/chem.201101272] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Indexed: 12/22/2022]
Affiliation(s)
- Benoit Habermeyer
- ICMUB, UMR CNRS 5260, Université de Bourgogne, 9 Avenue Alain Savary, BP 47870, 21078 Dijon CEDEX (France)
| | - Atsuro Takai
- Department of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency (JST), 2‐1 Yamada‐oka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7370
- Present Address: Organic Materials Group, Polymer Materials Unit, National Institute for Materials Science (NIMS), 1‐2‐1 Sengen, Tsukuba 305‐0047 (Japan)
| | - Claude P. Gros
- ICMUB, UMR CNRS 5260, Université de Bourgogne, 9 Avenue Alain Savary, BP 47870, 21078 Dijon CEDEX (France)
| | - Maya El Ojaimi
- ICMUB, UMR CNRS 5260, Université de Bourgogne, 9 Avenue Alain Savary, BP 47870, 21078 Dijon CEDEX (France)
- Present Address: Department of Chemistry, University of Houston, Houston, Texas 77204 (USA)
| | - Jean‐Michel Barbe
- ICMUB, UMR CNRS 5260, Université de Bourgogne, 9 Avenue Alain Savary, BP 47870, 21078 Dijon CEDEX (France)
| | - Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University and ALCA, Japan Science and Technology Agency (JST), 2‐1 Yamada‐oka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7370
- Department of Bioinspired Science, Ewha Womans University, Seoul 120‐750 (Korea)
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34
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Greatly Enhanced Intermolecular π-Dimer Formation of a Porphyrin Trimer Radical Trications through Multiple π Bonds. Chemistry 2011; 17:3420-8. [DOI: 10.1002/chem.201002822] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2010] [Indexed: 11/07/2022]
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35
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Ohkubo K, Fujimoto A, Fukuzumi S. Metal-free oxygenation of cyclohexane with oxygen catalyzed by 9-mesityl-10-methylacridinium and hydrogen chloride under visible light irradiation. Chem Commun (Camb) 2011; 47:8515-7. [DOI: 10.1039/c1cc12534f] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Ohkubo K, Mizushima K, Iwata R, Fukuzumi S. Selective photocatalytic aerobic bromination with hydrogen bromide via an electron-transfer state of 9-mesityl-10-methylacridinium ion. Chem Sci 2011. [DOI: 10.1039/c0sc00535e] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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37
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Fukuzumi S, Hanazaki R, Kotani H, Ohkubo K. Synthesis and Photodynamics of 9-Mesitylacridinium Ion-Modified Gold Nanoclusters. J Am Chem Soc 2010; 132:11002-3. [DOI: 10.1021/ja105314x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan, and Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Ryo Hanazaki
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan, and Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Hiroaki Kotani
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan, and Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
| | - Kei Ohkubo
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan, and Department of Bioinspired Science, Ewha Womans University, Seoul 120-750, Korea
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38
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Murakami M, Ohkubo K, Fukuzumi S. Inter- and Intramolecular Photoinduced Electron Transfer of Flavin Derivatives with Extremely Small Reorganization Energies. Chemistry 2010; 16:7820-32. [DOI: 10.1002/chem.200903236] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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39
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40
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Zilberg S. Electronic structure of 9-mesityl-10-methylacridinium in ground and excited states: charge-shift mechanism introduced by counter anion shift. Phys Chem Chem Phys 2010; 12:10292-4. [DOI: 10.1039/c0cp00491j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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Ohkubo K, Mizushima K, Iwata R, Souma K, Suzuki N, Fukuzumi S. Simultaneous production of p-tolualdehyde and hydrogen peroxide in photocatalytic oxygenation of p-xylene and reduction of oxygen with 9-mesityl-10-methylacridinium ion derivatives. Chem Commun (Camb) 2010; 46:601-3. [DOI: 10.1039/b920606j] [Citation(s) in RCA: 180] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Change in the Site of Electron-Transfer Reduction of a Zinc-Quinoxalinoporphyrin/Gold-Quinoxalinoporphyrin Dyad by Binding of Scandium Ions and the Resulting Remarkable Elongation of the Charge-Shifted-State Lifetime. Chemistry 2009; 15:10493-503. [DOI: 10.1002/chem.200901105] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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43
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Ohkubo K, Fukuzumi S. Rational Design and Functions of Electron Donor–Acceptor Dyads with Much Longer Charge-Separated Lifetimes than Natural Photosynthetic Reaction Centers. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2009. [DOI: 10.1246/bcsj.82.303] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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44
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Hu J, Xia B, Bao D, Ferreira A, Wan J, Jones G, Vullev VI. Long-Lived Photogenerated States of α-Oligothiophene−Acridinium Dyads Have Triplet Character. J Phys Chem A 2009; 113:3096-107. [DOI: 10.1021/jp810909v] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Jingqiu Hu
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
| | - Bing Xia
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
| | - Duoduo Bao
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
| | - Amy Ferreira
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
| | - Jiandi Wan
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
| | - Guilford Jones
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
| | - Valentine I. Vullev
- Department of Chemistry and Photonics Center, Boston University, Boston, Massachusetts 02215, and Department of Bioengineering, University of California, Riverside, California 925521
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